A small personal project shown below. I have an apartment in Spain with underground parking. While I don’t use the parking myself it was brought to my attention that getting in and out of the car park is very tricky due to a sharp turn to enter it. After looking online I was surprised to find that there is no simple device on the market that uses a proximity sensor with some lights to show how close your getting to it.

I decided to make one myself using a water proof proximity sensor and a simple water proof lighting strip. All of this is linked to a very simple Arduino nano controller, soldered and hot glued for protection from the elements. The video below show the device working as required, however with any device like this that needs to lie outside for extended periods of time I’m now looking into way to power it. Tests with a solar charging power pack are producing results of up to 6 days. But ideally I want this to last months, so more work needed before I take it out to Spain for real life testing.